diff --git a/assets/js/ticket.js b/assets/js/ticket.js
index 09155a0..aa4a6ea 100644
--- a/assets/js/ticket.js
+++ b/assets/js/ticket.js
@@ -284,7 +284,15 @@ function addComment() {
             // Clear the comment box
             const nc = document.getElementById('newComment');
             if (nc) nc.value = '';
-            
+
+            // Clear the live preview — clearing the textarea programmatically
+            // does not fire 'input', so updatePreview() never runs
+            const previewDiv = document.getElementById('markdownPreview');
+            if (previewDiv) {
+                previewDiv.innerHTML = '';
+                previewDiv.classList.add('is-hidden');
+            }
+
             // Format the comment text for display
             let displayText;
             if (isMarkdownEnabled) {